Duodenum – function and definition

Definition and Function of Duodenum The first segment of the SMALL INTESTINE, which receives partially digested and liquefied food (called chyme) from the STOMACH. The common BILE duct ends in the duodenum, channeling bile from the GALLBLADDER to the small intestine. Much of the activity of digestion takes place in the duodenum, where an abundance of DIGESTIVE ENZYMES combines with the bile to further break […]

Read More

Bile – definition, function and production

Bile Definition Bile is a liquid that the LIVER produces to carry some of its waste products into the digestive tract. Specialized cells called hepatocytes synthesize bile from water, cholesterol, bile acids, bile salts, BILIRUBIN and other bile pigments, and electrolytes. The hepatocytes break down cholesterol, a fatty acid, into bile acids. Other cells in the liver further […]

Read More

Esophagus – function, disorders and problems

Definition of Esophagus The muscular tube that extends from the back of the THROAT to the top of the STOMACH. From 10 to 12 inches long, the esophagus carries ingested food and fluids to the stomach to begin the process of digestion. As the esophagus leaves the throat its MUSCLE tissue is primarily striated (voluntary); as the esophagus enters the […]

Read More

Bile Ducts – definition and function

Bile Ducts Definition Channels that carry BILE from LIVER to the GALLBLADDER and from the gallbladder to the DUODENUM (first segment of the SMALL INTESTINE). The intrahepatic ducts are within the structure of the liver. They collect bile the liver secretes and transport it from the liver. The extrahepatic ducts are outside the liver and route bile to the gallbladder and duodenum. They are the […]

Read More

Flatulence – definition and causes

Flatulence Definition Flatulence – the clinical term for intestinal gas. Flatulence indicates undigested food particles are present in the COLON. Consuming large quantities of indigestible fiber (such as with beans and other legumes), eating too fast to thoroughly chew food before swallowing, and eating a larger quantity of food than the gastrointestinal tract can accommodate are […]

Read More

Bilirubin – definition, values / levels

Bilirubin Definition A metabolic product of ERYTHROCYTE (red BLOOD cell) heme that is a key component of HEMOGLOBIN. Bilirubin exists in two forms, conjugated (also called direct), which is water soluble, and unconjugated (also called indirect or free), which is fat soluble. The amounts and ratios of bilirubin present in the BLOOD help doctors assess LIVER and GALLBLADDERfunctions. Normal Blood Bilirubin Values unconjugated […]

Read More

Gallbladder – Definition and Function

Definition Gallbladder is a small, muscular pouch on the underside of the LIVER that concentrates and stores BILE. Function Gallbladder absorbs about 90 percent of the water in the bile that arrives from the liver, creating concentrated, potent bile. Fats and proteins in the chyme (partly digested food) the STOMACH sends to the DUODENUM trigger the duodenum to release the digestive […]

Read More

Borborygmus definition

Borborygmus definition Borborygmus – the growling and rumbling sound of gas moving through the gastrointestinal tract during digestion. Borborygmus, sometimes referred to in the plural, borborygmi, indicates normal function of the gastrointestinal system. The sounds originate with the STOMACH and continue through the SMALL INTESTINE and large intestine. Excessive rumblings may indicate incomplete digestion such as may result from eating […]

Read More

Ileum – Function, Definition and Conditions

Definition and Function Of Ileum The third, final, and longest segment of the SMALL INTESTINE. About 10 feet in length, the ileum extends from the JEJUNUM to the CECUM. The ileum absorbs fats and fat-soluble vitamins as well as other remaining nutrients from the digestive content, which it then passes through the ileocecal valve into the cecum (the first segment of […]

Read More

Bowel Movement – what is and definition

Bowel Movement Definition Bowel Movement is the passage of solid digestive waste (called feces or stool) from the body through the ANUS. The frequency, appearance, and nature of bowel movements are highly variable. Food typically travels through the gastrointestinal system in 18 to 36 hours, so most people have bowel movements daily or every other day. However, […]

Read More